<template>
  <footer class="footer">
    <span class="todo-count">剩余<strong>{{ len }}</strong></span>
    <ul class="filters">
      <li>
        <a :class="{ selected: type === 'all' }" href="javascript:;" @click="$emit('changeType', 'all')" >全部</a>
      </li>
      <li>
        <a :class="{ selected: type === 'no' }" href="javascript:;" @click="$emit('changeType', 'no')" >未完成</a>
      </li>
      <li>
        <a :class="{ selected: type === 'yes' }" href="javascript:;" @click="$emit('changeType', 'yes')" >已完成</a>
      </li>
    </ul>
    <button class="clear-completed" @click="clearFn" >清除已完成</button>
  </footer>
</template>

<script>
export default {
  props: {
    type: String,
    len: Number
  },
  methods: {
    clearFn() {
      this.$emit('clear')
    }
  }
}
</script>